Door-check and open-door-locking device.



.W. L'KELLY. DOOR CHECK AND OPEN DOOR LOCKING DEVICE.

APPLICATION FILED AUG.I4| I914.

Patentd. Feb. 8,1916.

2 SHEETSSHEET l.

,THB COLUMBIA PLANOGRAPH c0, WASHINGTON, D. c.'

W. J. KELLY.

DOOR CHECK AND OPEN DOOR LOCKING DEVICE.

APPLICATION FILED AUG-14,19I4.

Patented Feb. 8, 1916,

2 SHEETS-SHEET 2.

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THE COLUMBIA FLAQJOQRAPH cm. WASHINGTON, D. c.

rrnn s rarns Parana SPEECH WILLIAM J. KELLY, or JAMAICA, NEW YORK,AssIeNoa To THOMAS MOONEY, or

nooonasron, vnwYonx; s

DGQR'JCHECK AND OPEN-DOOR-LOCKING DEVICE.

Specification of Letters Patent." 7 Patented Feb, 8 1916 Applicationfiled August 14, 1914. Serial No. 856,729.

To (ZZZ '21: Ito-m it may concern:

Be it known that 1, WIL IAM J. KELLY, a citizen of the United States ofAmerica, residing in Jamaica, Long Island, county of Queens, and Stateof New York, have invented certain new and useful Improvements inDoor-Checks and Open-Door-Loclc ing Devices, of which'the following is aspecification.

This invention relates to door check devices of any construction or modeof operation having a door-closing arm held to the door and coupled asby a pivoted link device to the door frame.

he invention has for its object to pro vide for such door checks asimple and efficient means or mechanism whereby an opened door may belocked open and to varying extent as may be desired by the occupant of aroom for which the door affords entrance or exit.

The invention consists in a door check having on its door-actuating arma latch device adapted to automatically engage the check casing andthereby lock the door open; and to engage the casing at different placesfor locking the door at different angles of opening; the parts beingrelatively arranged to automatically lock the door open only after thedoor has been opened farther than is necessary to permit conveniententrance or exit.

The invention also includesdetails of construction of the doorlockingdevices as combined with old standard parts of the door check allas hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a sectional plan view showingin full lines the door check applied to a closed door and indicating bydotted lines the first position in which the door may be locked open.Fig. 2, a front elevation showing the closed door. Fig. 3, an enlargeddetail plan view of a preferred construction with the door actuating armbroken away. Fig. 4, a vertical section taken on the irregular line aain Fig. 3. Fig. 5, a detail plan View showing the door locking latchhead in horizontal section. Fig. 6, a sectional plan view taken on theirregular line Z)b inFig. 4, and Fig. 7, a detail plan of a modificationhereinafter described.

In the drawings the numeral 1 indicates a door and 2 its frame. To thedoor is fixed the barrel.

of the ratchet 7, for holding under any re quired torsion a coiledspring 10, opposite ends of which are held to the ratchet sleeve 6 andcasing barrel 3 respectively. Theouter end of arm 8 is coupled to oneend of a lengthwise adjustable. two-part link device 11, the other endof which is pivoted to the door frame .2.

In carrying out this invention in apreferred manner there is formed onor lixed to a top edge portionof the casing cap 4, a cam block 12,preferably having two edge cam surfaces 13, 14, and also provided with acentral edge notch 15 into which is adapted to enter the inner headportion 16 of a sliding latch 17 whichhas any suitable bears ings on thedoor closing arm 8, and is normally retracted as by a spring 18, untilit strikes a stoppin 19 in the arm for always holding the latch out ofcontact with the spring torsion adjusting ratchet 7 but freelypermitting entrance of the latch into the cam block notch 15. Said.canr-blockmay have additional edge notches 20, 21, shown in Fig. 7 ofthe drawings, and for a purpose hereinafter explained. In the preferedconstruction the casing barrel 3 has at its upper end a series of slotsor perforations 22, 28, 24, each adapted to receive the inner end of aradially adjustable screw or pin detent 25 fitted in the edge flange ofthe casing cap 4.

In the operation of the invention as shown in Figs. 1 to 6, inclusive,and when the casing cap detent 25 is adjusted in the casing barrel slot22, the latch end 16, as the door is opened, will ride upon the camsurface 13, until the latch enters the cam block notch 15, which occurswhen the door is opened for about sixty degrees of arc and the door willbe locked at this angle of opening represented by the dotted lines inFig. 1 of the drawings. Should the casing cap 4 be adjusted on itsbarrel 3, to allow the detent 25 to enter the cam block notch 24, thedoor would be locked fully open at an angle of about ninety degrees, andwhen the detent 25 is adjusted in the barrel notch 23, the door will belocked open at an intermediate angle between sixty and ninety degrees.

It may be specially noticed that by reason of the relative positions ofthe automatic latch 17 the notched cam block, the detent '5, and thedoor closing arm 8, the door is never locked open until it has beenopened fully to the sixty degree angle position, and therefore the doormay at any time be opened to a less extent and will not then be lockedopen and also will be automatically closed by the spring actuated arm 8,and link 11, in usual manner. As a door opening of less than sixtydegrees is ample to permit entrance or exit of any one person it isobvious that the latch mechanism 12 to 17, will desirably remaininoperative during all ordinary use of the door. The locked-open doormay at any time be forelbly closed, at first by hand pressure on thedoor suflicient to cause the latch to ride up the inclined wall of thecasing notch 15, and be freed therefrom, and finally by usual action ofthe door check spring 10, arm 8, and link 11. Should the door be openedto any extreme position beyond the ninety degree angle, the latch head16 will ride upon the other cam block face 14, as the door is nextforcibly closed, first by direct action of the spring actuated arm 8until the latch 17 enters the casing notch 15, and then by hand pressuresufficient to force the latch from said notch to finally permit thespring 10 to automatically complete tlie door closing operation. Asshown in Fig. 7 of the drawings the cam block 12, having cam surfaces13, 14, have its edge notches 15,

20, 21, so located that the latch 17 on arm 8 will act in any one ofthese notches to lock the door open in the respective above named threeangular positions, and without using the casing cap detent 25, acting incasing barrel notches 22, 23, 24 as will readily be understood.

I claim:

1. The combination with a door check casing of a spring-actuating armmounted to turn about the axis of the casing, a notched cam having camsurfaces of less radius than the casing and having its inner endslocated over the top of the casing and within the periphery thereof, anda pawl carried by the arm engaging the cam and moved radially outwardthereby and adapted to engage the notch of the cam.

2. I11 a door check thecombination with a spring barrel, a shaftextending into the barrel, a sleeve surrounding said shaft and carryinga ratchet wheel, a spring attached to the barrel and to the sleeve, acap for the barrel having a notched cam thereon arranged in the sameplane with the ratchet wheel and partially surrounding it, aspring-actuating arm mounted to turn relatively to said sleeve, a pawlcarried by the arm and engaging the ratchet wheel, and N another pawlmounted on the arm and moving radially toward and from the ratchet wheelbut held at all times out of engagement therewith, and which is adaptedto ride on said notched cam and engage the notch thereof.

In testimony whereof, I have hereunto subscribed my name.

WILLIAM J. KELLY. lVitnesses GEORGE A. Devon, EDGAR S. BLOOH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. O.

